Jon, welcome. There are plenty of resources available for self and group study that you can learn about in these forums. One suggestion: if your goal is to use the Greek for theological purposes, you'll generally find yourself getting into trouble. If your goal is to learn Greek better to understand the NT, then you'll begin to see benefits in your own life and ministry. And that means learning Greek as a language as best you possibly can.
N.E. Barry Hofstetter
Instructor of Latin
Jack M. Barrack Hebrew Academy
ἐγὼ δὲ διδάσκώ τε καὶ γράφω ἵνα τὰ ἀξιώτερα μανθάνω